A few months after Ross had a dental procedure for the abscess that was missed, he appeared

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Question:

A few months after Ross had a dental procedure for the abscess that was missed, he appeared to be displaying similar behaviour this time for the right side of his face. He began hitting the side of his head violently which Liana recognised right away. Before consulting with anyone or asking Ross about his pain, she immediately booked him in to have a dental operation.

Has Liana provided Ross with informed consent? Why/why not?